Three phase bridge pulse width modulated inverter / Mohd Razib Sani and Rusmadi Ali

This project is an attempt at designing a Three Phase Bridge PWM Inverter by using microprocessor controlled technique. The microprocessor in used in an 8-bit MEK6802D5.The relevent PWM waveforms are generated by using a suitable assembly language programming. This type of inverter employed power transistors as the main component along with their drive and protection circuit. circuitry This inverter is designed to operate at a fixed frequency of 50 Hz and a variable d.c source. The variable d.c source is obtained by utilizing a single-phase auto-transformer. This auto-transformer is monitored manually to produce a variable single phase a.c supply which is then rectified through a bridge rectifier. The inverter output obtained from the laboratory work is found to be in aggrement with the theoritical results.